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One viewer tweeted: “Duane Henry needs to stay. The only replacement for Tony I will accept.”

Another said: “I will really miss Tony but looking at Duane Henry will help ease the pain.”

Others like his British accent or "so dreamy" looks, while a lot of tweets are along the lines of: “Loving your character on NCIS. Can’t wait to see more!”

Duane, 31, appeared on The Talk chat show hosted by Sharon Osbourne, along with fellow new cast members Jennifer Esposito (Spin City, The Affair) and Wilmer Valderrama (Grey’s Anatomy).

Duane Henry on the cover of an American magazine with NCIS co-stars Wilmer Valderrama and Jennifer Esposito

While they join NCIS, David McCallum, the 83-year-old Scottish actor who shot to fame in The Man From UNCLE and plays Dr Donald Ducky Mallard, will leave the show during this series.

NCIS – starring Mark Harmon and watched by 60 million people around the world – revolves around a fictional team of special agents from the Naval Criminal Investigative Service, which conducts criminal investigations involving the US Navy and Marine Corps.